Went to the gun show up in Greenville today to see what the area had to offer. It was AR's galore. The highlight was a display of Savage Model 99's spanning 100 years. I'll post pics later. Was looking for Tokarev mags but only saw a couple with the new semi auto version of the PPs-43 pistol. One thing I did pick up was a contender barrel in 30 Herrett. I've had the dies and converted some 6.8 brass but haven't done a barrel yet. I can't remember if I found a reamer someplace or not. Will have to dig up my tool box next time I'm home. Marty ter Weeme talked about this one years ago and I ran the numbers on it and it looks good on paper. This was before the 30 Remington AR. One advantage is mag capacity which we should be able to use stock 762x39 mags. The 30AR is a single stack and is limited to about 4-5 rounds. It does give up 100 fps or so to the 30 AR, but we should hit 2500 fps no problem with it. Now that I've got a barrel and dies, time to load some up! Have really been thinking about this one since the 300 Black Out became so popular. It will out perform it in the high velocity area so lets see what it will do.
Left all my 30 Herrett stuff back home so will gather it all up next trip and see if I can add a barrel to my stack of stuff to get done when Im home. Been planning this one for a while. Speaking of expensive, have you checked out 6.8 brass lately?!?!?! Got to get me some more so here we go again...... Stay tuned on this, the paper numbers look interesting, we'll see what the chrono decides, will it be a real alternative to the 7.62x39?
OK, don't have a reamer. Called Dave Manson and we discussed the "standard" 30 Herrett Rimless and I'm going to run some profiles through quick design to see where we are at. My plan is for 110 - 130 gr bullets but will also see how the 147 FMJ's play out. This will be another one of those, when we have time, projects.....
Did some loading today while I had the chance and dug out the 30 HRT stuff. I trimmed the brass down to 1.610" after forming through the 30 Harrett full length size die. Loaded some of the pulled 147 FMJ's and Hornady 125gr SSP all over 20gr of 4227. QL shows 1700 fps with the 147's from a 10" barrel so we'll see how it goes.
On the left is a new 6.8 case, 125 gr SSP 30 HRT, 147gr 30 HRT, and 110gr JHP 7.62x39 I've loaded these to the crimp groove which puts the 147 gr about .100 long and the 125 about .040 long. I'll run these through the contender and see what happens. The necks are a shade long for the short 30 cal bullets so I might trim them back a bit but we'll see how it goes.
Took the Contender out to the range Sunday t test fire the 30 HRT loads. I tried the 147 FMJ's and Hornady 125 SSP's both over 20 gr of IMR 4227.
Fired out of the 10" barrel I got 2039 fps on the 147's and 2151 on the 125's. Now this is from a 10" barrel. Both fired cases practically dropped out of the chamber which is a good thing because there is no rim on the SPC case for a chamber designed for the 30-30 case. I did get the primers set back a few thousands but that could just be a minor headspace issue. I'll back off the sizing die a touch and see what happens. QL says I have about 2.5 more grains of powder capacity plus it already registered 200 fps faster than predicted so we'll have to keep an eye on pressure but this thing is going to rock! The goal was to outperform the 7.62x39 with standard components and so far it looks promising.
Just a shout out here. From a math stand point, the 30 HRT could be hands down the most "put your word of the day here" per pound AR-15 round out there. I have not done much on this only because the guys over at AR Performance have already done it and I suggest you check them out. I first got parts from them when they offered their "super bolts" for the 762x39 and we built our 250 SS and 257 ARS rounds. They also did a custom bolt&extension with a .473" dia bolt face that I built 45 acp guns with. Since that time they now offer a 750SD bolt that is the new "super bolt". These guys are the real deal and knock out some great stuff. Some day I'll do a 30 HRT...and use their stuff...